CVE-2020-15049

HIGH
8.8
CVSS Score
Published: June 30, 2020 at 05:55 PM UTC
Updated: June 17, 2026 at 02:55 AM UTC
2 products affected across 2 vendorsFedoraCache Squid

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Severity
HIGH8.8
Exploit prediction
EPSS 6%

Description

An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing "+\ "-" or an uncommon shell whitespace character prefix to the length field-value.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.0 ≤ v ≤ 2.63.1 ≤ v ≤ 3.5.284.0 ≤ v < 4.125.0 ≤ v < 5.0.32.72.7 stable22.7 stable32.7 stable42.7 stable52.7 stable62.7 stable72.7 stable82.7 stable9
Affected range stops below 4.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.0.3, so it looks safe — our inference, not a vendor statement

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-444

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